"Role Partner column" is designed to limit outsources' access to their data while allowing local users to see all data. The "Masked column" is a component of the "Masked Protected flag," and it serves to identify the user who was impacted by the masking. This allow only managers from the same location to view their agents, with the agent's name being Masked= 1 from managers in other locations.
Under table 'RLS Security' to have the parent/child relation>> created column Relationship = PATH('RLS Security'[USER_BDGE_NBR],'RLS Security'[MGR_BDGE_NBR])
Then, under ‘manage roles’ > ‘Manage security roles’
Created the role called : RLS Security Mask Partner